Classical calibration procedures for phenomenological thermo-elasto-viscoplastic constitutive models usually involve a large number of tests to identify all the material parameters, leading long experimental campaigns. In present work, novel methodology that takes full advantage full-field measurements heterogeneous test is proposed. It relies on an innovative combination Virtual Fields Method ...

Abstract This study investigated the hot workability of an experimental, non-toxic, low-cost Ti-3.4Fe alloy using flow stress analysis, constitutive modelling, processing maps and microstructural examination. Hot compression tests were performed on samples at different deformation temperatures (750, 800, 850 900 °C), strain rates (0.05, 0.1, 1 10 s −1 ) a total 0.6. The Gleeble® 3500 thermomech...

In contrast to practical hot compression processes, the testing of workability TiAl alloys is usually conducted under conditions constant strain rates and temperatures. This work aims at investigating microstructural evolution on a Gleeble-3800 thermomechanical simulator variable rate (0.1, 0.01 0.001 s−1) 1200 °C. The results show that, after holding time 30 s, abrupt change in ε = 0.3 (engine...

In this contribution, a series of isothermal compression tests for the 825 nickel-based alloy were performed using Gleeble-3800 computer-controlled thermomechanical simulator at temperature range 850 °C to 1150 and strain rate 0.14 s−1 2.72 s−1. The hot deformation equation is derived from piecewise model based on theory work hardening-dynamic recovery dynamic recrystallization (DRX), respectiv...

railway service terminals are the places of a railway network usually equipped with costly technology based on highly complicated technological procedures demanding a high degree of coordination and control skills. design of these systems and the organization of their operation should facilitate reaching to the required capacity together with high quality of service processes as well as minimal...

In this study, a new non-equiatomic and cost-effective high-entropy alloy (HEA), Al8Cr12Mn25Fe35Ni20, was designed using thermodynamic parameters prepared by arc melting. The subjected to homogenization at 1200 °C hot-rolling reduction of 50%. hot deformation behavior mechanism were studied varying strain rates ranging from 0.01 10 s?1 temperatures 900° 1100°C via plane compression tests Gleebl...

The conducted research of X5CrNi18-10 (AISI 304) in the DSI Gleeble 3500 device aimed to determine tensile strength this steel at elevated temperatures, simulating welding-like conditions while sensitizing liquation cracking. defined High-Temperature Brittleness Range (HTBR) made it possible whether material is susceptible hot cracking, which can significantly affect weldability structures. Nil...

Medium-Mn (MMn) steels have received much research attention recently because their low austenitisation temperature enables low-temperature hot stamping (LTHS). However, the effect of initial state material on performance is still unknown. In this study, different states deformation behaviour a typical MMn steel during uniaxial tensile testing under LTHS conditions (deformation at 500–600 °C st...

Inconel®718 is a well-known nickel-based super-alloy used for high-temperature applications after thermomechanical processes followed by heat treatments. This work describes the evolution of microstructure and stresses during hot deformation prototype alloy named IN718WP produced powder metallurgy with similar chemical composition to matrix Inconel®718. Compression tests were performed simulato...